APA (7th ed.) Citation

edited by Michael E. Barbour, W. D. B. North American terrestrial vegetation. Cambridge University Press.

Chicago Style (17th ed.) Citation

edited by Michael E. Barbour, William Dwight Billings. North American Terrestrial Vegetation. Cambridge University Press.

MLA (8th ed.) Citation

edited by Michael E. Barbour, William Dwight Billings. North American Terrestrial Vegetation. Cambridge University Press.